ElectricMotorcycleForum.com

  • May 30, 2024, 03:38:10 AM
  • Welcome, Guest
Please login or register.

Login with username, password and session length
Advanced search  

News:

Electric Motorcycle Forum is live!

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Topics - gt13013

Pages: [1] 2
1
I have a 2016 FXS and a 2023 S.
I use custom mode, with throttle regen to 0% and brake regen to 100%.
I find the brake regen quite correct on the FXS, and the regenerative braking is sufficient in most situations, if you stay in a quiet driving mode. It uses the Z-Force 75-5 motor with a 420 A controller.
On the other hand, I find the regenerative braking very weak and insufficient on the S, which forces you to brake constantly with the discs, even if you stay in a quiet driving mode. It uses the Z-Force 75-7 motor with a 550 A controller.
I am surprised by some comments in forums or FB, where some S riders find their regenerative braking too strong and have to reduce it using the custom mode.
There are probably some MBB parameters that could be set by a Zero dealer, or by entering the MBB with a higher level than the default one: https://zeromanual.com/wiki/Gen2/Regen . But since the bike is new, I prefer not to change anything myself. Note that the MBB logs with the default Login Level 0 do not give any information about these settings. Moreover there is no competent Zero dealer where I live...

In order to get a quantitative measure of this regenerative braking, I have used the following procedure, that should work with any Gen2 Zero:
- Set the bike in custom mode, with throttle regen to 0% and brake regen to 100%
- Use the ZeroSpy Android application to record the bike data every second
- Go as fast as you can on an empty road and brake using the regenerative brake (and preferably not using the disk, since it would shorten the stopping sequence and you would get less data points on it)
- Do it several times in order to check the repeatability.
- Extract the data from your phone and open the file with a spreadsheet
- Make a column where you multiply the battery voltage by the battery amps, in order to get the battery power
- Make graphs of this battery power versus the bike speed during the regenerative braking sequences
I attach an example. For the FXS I was in town and it was difficult to go faster...
Anyway, it is easily seen that the FXS regenerative braking is more than two times greater than the S one. And the bike is lighter.

If some of you are interested, it would be interesting to draw the same kind of curves in order to see if the regenerative braking differs between bikes and models.
 
And finally the main question is to know if the regenerative braking can be increased by a Zero dealer.

2
Zero Motorcycles Forum | 2013+ / Zero Application version
« on: May 08, 2023, 06:53:51 AM »
Hello
I am planning to buy a Zero S from 2020 and I want to extract the logs from it to check for errors, as well as the state of health of the battery. I am on Android.
On my 2016 FXS, I use an old version of the Zero App because newer versions are no longer fully compatible.
On this 2020 Zero S, I did a test with version 2.1.3 (391) of the Zero App and a phone running Android 8. When I start extracting the logs, it never ends. The application displays a download percentage that exceeds 100% !! I stopped in the 500%, but the logs do not arrive.

My question is :
What version of the Zero App (and possibly Android, but I don't think that's most important) are you using to pull logs from your 2020 Zeros (S,SR,DS,DSR,FX,FXS) ?

3
My FXS 2016 was using his original firmware until July 2021 (Firmware rev. 47).
In July 2021 it has been repaired (controller replaced), and the firmware became rev. 56.

Before, the SOC was a pretty good measure of the remaining capacity of the battery, and a very good indicator of the remaining range.
But since the repair, I get strange behaviour of the SOC: decreasing and rising inconsistently, decreasing much faster than before, and consequently the range has decreased a lot.

I rode approximately the same trip several times.
Since I keep the logs for the entire life of my bike, I was able to extract the data from 4 of these trips. And that shows a clear difference between the firmwares.

These data confirm the overall impression:
- the displayed SOC decreases much quicker with the new firmware, and the range has decreased since the bike seems to not accept the lowest pack voltages that it accepted with the old firmware. I have a log of a full battery depletion with the old firmware. I have to find some time in order to do a full depletion with the new firmware and compare the data.
- another impression is that the new firmware SOC is mainly based on the battery pack voltage, in such a way that it decreases a lot if you ride the bike intensively, but then increases as soon as you ride more quietly. With the new firmware, when I start the bike, I can get 2% of SOC decrease in 2 minutes, without riding the bike, just due to the headlight decreasing the battery voltage! The old firmware was smarter, and probably taking into account the amount of energy used. Its behaviour was really good and it gave a pretty accurate SOC.

The most interesting part is in the attached spreadsheet. Be sure to explore the 3 tabs in this spreadsheet.




4
Zero Motorcycles Forum | 2013+ / Meaning of vcap and prechg in the logs ?
« on: January 29, 2022, 07:36:59 AM »
My Zero is a 2016 FXS with 2 battery packs. I have kept the original firmware until July 2021. It was :
   Firmware rev.      47
   Board rev.         3
But in July 2021, the controller died, and has been replaced. At the same time, they made a firmware upgrade. The new one is:
   Firmware rev.      56
   Board rev.         3
They also changed some internal parameters of the bike.
Since this intervention, I get strange behaviour of the SOC (mainly decreasing and rising inconsistently, since it now depends mainly on the battery voltage, whereas with the old firmware it was more clever and it gave pretty good estimations of the SOC), and the range has decreased.
I looked  at the logs in detail, and I noticed this strange thing.

When I key the bike on, there are two lines of this kind that appear in the log. They apparently give information about the two battery packs. I have kept all the log files of my bike, and for all the logs before the intervention, the two lines show very close values. Here is an example:
   Module 00 Closing Contactor  vmod: 109.052V, maxsys: 109.049V, minsys: 108.938V, diff: 0.111V, vcap: 96.562V, prechg: 89%
   Module 01 Closing Contactor  vmod: 108.916V, maxsys: 109.049V, minsys: 108.938V, diff: 0.111V, vcap: 96.562V, prechg: 89%
Here is another example, before the intervention :
   Module 00 Closing Contactor  vmod: 102.946V, maxsys: 102.985V, minsys: 102.926V, diff: 0.059V, vcap: 91.125V, prechg: 89%
   Module 01 Closing Contactor  vmod: 102.990V, maxsys: 102.985V, minsys: 102.926V, diff: 0.059V, vcap: 91.125V, prechg: 88%

But since the intervention, the two lines always show very different values for vcap and prechg. Here is an example:
   Module 00 Closing Contactor  vmod: 105.837V, maxsys: 105.886V, minsys: 105.837V, diff: 0.049V, vcap: 93.312V, prechg: 88%
   Module 01 Closing Contactor  vmod: 105.880V, maxsys: 105.891V, minsys: 105.880V, diff: 0.011V, vcap: 105.500V, prechg: 100%
Another example:
   Module 00 Closing Contactor  vmod: 101.966V, maxsys: 101.979V, minsys: 101.966V, diff: 0.013V, vcap: 90.562V, prechg: 89%
   Module 01 Closing Contactor  vmod: 101.973V, maxsys: 102.025V, minsys: 101.973V, diff: 0.052V, vcap: 101.625V, prechg: 100%

I wonder if something was not badly reprogrammed during the intervention.
Some questions:
1) What are the values of vcap and prechg representative of ?
2) By the way, same question for vmod (I assume the present module voltage?), maxsys, minsys ?
3) Can it be related with the strange behavior of the SOC ?
4) Is someone understanding what happened ?
5) If someone has a modular FXS or FX, I would like to know if they have the same strange logs as me
 
Thanks for reading this long message

5
When I plug my bike (FXS 2016) for charging directly to the wall plug, I get a clean start (double click when the 2 contactors close) and a clean shutdown when I unplug the bike (2 almost simultaneous clicks when the 2 contactors open).
But If I use a smart plug to control the switching ON and OFF of the charge, I get strange buzzing noises coming from the bike, particularly when switching OFF.
I made a video:
The smart plug is a Meros MSS310 Smart Wi-Fi Plug with Energy Monitor.

I have 3 questions:
1) what is the origin of this buzzing noise?
2) can it damage the bike?
3) do you have references of other smart plugs that work fine with our Zero's? I would like one working in 220 V, that can switch up to 16 Amps, and preferably compatible with Amazon Alexa.


6
Hello,

My 2016 FXS was running fine until these days. Some days ago I have charged the bike during night using the standard cord and a manual timer. The bike charged from 58% to 73% in 1h 30min. Until there all seemed OK.

But when I tried to use the bike the day after, the bike did not start.
1) When keying on the bike: no "click". After 1min 30s the headlight turns off and the screen starts flashing.
2) When I plug in the charging cord: no "click". After 1min 30s the screen starts flashing.

I have written a page with much more details (MBB log, errors on dash, videos showing the dash and the BMS LEDs in both above cases): https://bit.ly/FXSbreakdown

I am looking for a way to diagnose the problem, and, if possible, to solve it myself in order to save time (I am afraid that if I take the bike to the dealership, there will be weeks of downtime...)

Thank you in advance for your expert advice!

7
Zero Motorcycles Forum | 2013+ / Engine does not stop
« on: August 14, 2018, 06:07:44 AM »
Today I made my FXS fall on the right side while parking on a rocky place.
I was  stopped when the bike fell.
1) But as soon as the bike fell, the rear wheel started to spin fast, while the throttle grip was cut off.
2) I immediately turned off the engine at the circuit breaker (or "motor stop switch") at the right side of the handlebar, but the engine continued to run.
The engine stopped only when I turned off the ignition key.

Points 1) and 2) seem abnormal to me.
Can someone give an explanation?

8
Zero Motorcycles Forum | 2013+ / Firmware data of our Zero's
« on: July 15, 2018, 05:52:00 AM »
If we could share our firmware versions, and link these data with the state of the bike (running well, having some particular problem), we could answer some questions such as
- Is somebody using the firmware that I plan to install without any problem?
- I have a problem. Is it correlated with the firmware version or not?
- Who is using the same firmware / bike as me?
- And many other...

We can start with a Google Sheet. And if we find a better solution later, we could switch to that solution.
http://bit.ly/2mhaxIP

Please use this thread only to discuss about this data sharing, but not to report your various problems with your bike.
You can discuss the problems with your bike elsewhere, and give a link to that discussion inside the spreadsheet.

9
Zero Motorcycles Forum | 2013+ / Cell balancing
« on: July 14, 2018, 11:35:18 PM »
Some references before beginning:
https://zeromanual.com/index.php/Cell_Balance
https://zeromanual.com/index.php/Unofficial_Service_Manual#Cell_Balancing
http://batteryuniversity.com/learn/article/bu_803a_cell_mismatch_balancing

My interrogation is: in which conditions is the self balancing starting?
At which SOC? When the bike is plugged or not?

We can read things that seem contradictory:
In https://www.facebook.com/groups/zmcowners/permalink/1623588564377012/ we can read: "The battery will auto self balance at any SOC above 50%, even if not plugged in".
In http://electricmotorcycleforum.com/boards/index.php?topic=7836.0 we can read: "There is a need to charge to 100% occasionally to let the balancing happen".

I have explored my BMS logs, and there are lines with the string "SOC adjusted for voltage". I grep'ed this string in the whole log and it gives the attached file.

Question?
Does the string "SOC adjusted for voltage" log the cell balancing?
If yes, it seems that it starts at 80% SOC (I have no line with less than 80% SOC. But that is not a proof...).


10
Hello,

I have some suggestions and a question about chargers.
 
First, my bike is a FXS 2016 with 6.5 kWh (in two 3.3 kWh packs).
Here, in Europe, the usual domestic plugs are 220V / 16A (so they can deliver about 3.5 kW). 
Up to know, I have always charged using  the onboard charger (720W), and most of the time I am limiting the charge to 80% using a timer. Indeed, most of my daily usage is less than 40 kms, and I only charge to 100% when I know that I could need more range.

But in some cases I would need to fast charge in order to increase my range.

For me, the perfect charger would be a mobile one (not fixed to the bike) since I would only use it occasionally. I would bring it in the top case when needed. A weight around 5 kgs or less would be fine.
I would use it on domestic plugs available everywhere (no need to search dedicated plugs which are still uncommon here).
A power around 3.3 kW would be great: it would draw 16A max on the domestic plug.
It could be used together with the onboard charger (using a domestic plug from another circuit) and give a full charge in about 1h35min.
But in case the available domestic plug is weak and does not allow to draw 16A, it would be nice to have a switch on the charger to reduce the power (ideally, a 3-positions switch to choose from 1.1kW, 2.2kW, 3.3kW, that would give a perfect range of solutions if adding the 0.72kW inboard charger).
Another nice feature would be to have a switch to choose between 100% charge and 80% charge.
Note that rather than working in constant power mode, it could work in CC-CV mode, with 3 switchable currents and 2 switchable end voltages.

It seems that there are already devices able to do that, but they need to be triggered in order to offer these functionalities.

I do not see anything that could be impossible, since Zero says in the manual of the bike that we can use simultaneously up to 4 Zero quick 1kW chargers (from the manual: "The scalable quick charging feature allows up to four supplemental accessory chargers (in addition to the existing integrated charger) to be connected to the motorcycle").

That would be great to have a charger of this kind (either made by Zero, or with Zero's agreement). For sure it would interest many users.


That was for the suggestions. Now for the question:

Recent and more sophisticated chargers seem to use complex interaction with the bike (CANbus), and they exchange various information in order to optimize the charge.
On the fast charge connector of my Zero, there are only 4 wires. Obviously, the two big ones are for the power.
But what kind of information passes through the two central wires? Is it only an ON / OFF signal sent by the MBB to the charger, or is it more complex? Wiring diagram here if it can help.


11
Zero Motorcycles Forum | 2013+ / Sidestand too loose ?
« on: June 21, 2018, 05:15:27 AM »
Hello
When putting my 2016 FXS on its sidestand, the stand seems to bend more than previously. I think it was not so loose before, but I am not sure.
I have made a video to show that:
Does it look normal? If you could check on your bike and tell me if yours is stiff or loose like mine, I would appreciate.
Thanks

12
Zero Motorcycles Forum | 2013+ / Saddle bags on FXS
« on: May 15, 2018, 07:43:19 AM »
I have a very occasional use of saddle bags and I wanted a cheap and simple solution to add some carrying volume.
You can search on internet for "SA-212 Komine Saddle Bag", and you will find this pair of bags for less than 40€.
If they are not sold with the bags, you should add a pair of plastic sheets that can be put at the bottom of the bags and make them more rigid (but I did not put them in place in the pictures thereafter).
A zip can extend each bag to a volume of 29 liters.
To mount the bags for the first time, since the documentation is in Chinese only, I used some youtube videos in order to understand how the straps should be positioned.
Once understood, it should take less than 10 minutes to put in place, and about 2 minutes to dismount.
You will not be able to have a passenger with these bags in place.
To save passenger seat, it would perhaps be possible to make a mount similar to that depicted in http://electricmotorcycleforum.com/boards/index.php?topic=7188
Here are 4 pictures, and you will find more pictures with better definition here.
 
 


13
I have played a little bit with the Zero display, and I realize that the "Life AV" value is completely false.
This value should give the average Wh/km for the entire life of the bike.
The dash gives 29.3 Wh/km, it is completely crazy !
If I compute it using 5441 km and the total consumption of 286 kWh, it gives 52.6 Wh/km, which is much more realistic.

Any idea of what is going wrong?

My FXS 2016 uses the original firmware :
Firmware rev. 47
Board rev. 3
Model FXS

14
Marseille et ses environs ont beau être la deuxième métropole de France, il n'existe pas de concessionnaire Zero à moins de 200 kms. Il y avait auparavant un concessionnaire Zero à Aix-en-Provence (à qui j'ai acheté ma moto), mais il a fermé début 2017.

Autrement dit: les possesseurs de Zero de la région prient pour ne pas avoir d'ennuis synonymes de grosse galère: le moindre pépin sérieux oblige à se procurer une remorque, faire un aller-retour de 400 kms pour déposer la moto à Montpellier ou à Cannes, et un deuxième aller-retour pour aller la chercher, soit 800 kms minimum pour n'importe quelle réparation sérieuse, en supposant que le problème soit résolu en une fois!
Et ceux qui voudraient acheter une Zero doivent certainement y renoncer pour la plupart.

Ce post a pour objectifs:
- d'essayer de regrouper la communauté des motards désireux de rouler en Zero dans l'aire de Marseille et ses environs, qu'ils soient déjà possesseurs d'une Zero, ou désireux d'en acquérir une,
- d'essayer de montrer qu'il y a un marché potentiel pour une concession Zero à Marseille ou à Aix,
- et pourquoi pas arriver à décider un concessionnaire intéressé par ce marché de franchir le pas. J'ai été en contact avec l'importateur européen de Zero aux Pays-Bas et ils cherchent aussi un concessionnaire afin de s'implanter dans la région, où il y a certainement un marché intéressant.

Bref, si vous êtes intéressé par Zero, et plus proche de Marseille que de Montpellier ou de Cannes, n'hésitez pas à vous manifester ici.

Gérard
13013 Marseille
Zero FXS 2016 11kW

15
Parts, Mods And Hacks / Top case for FXS
« on: November 01, 2017, 05:30:08 PM »
I spent some time to find a top case solution that matches with my needs. Perhaps other people could be interested by my way of mounting a Givi Monolock top case (mine is a E450 SIMPLY II) using a Givi M6M adapter made to carry one U lock, but which also is able to carry two U locks if necessary.
Take care that if you carry 2 U locks as I do, the second one rubs on the mudguard and damages it a little bit. You should put something between them. I use rubber that I got from an old tire tube, and attach it to the mudguard using strong black adhesive tape. It is not visible since it is masked by the top case.

I was not able to mount the M6M directly on the Zero FX Top Box Rack Kit.
There are 6 possible bolts to fasten the M6M rack on its supporting plate.
I have first made a 10mm plywood plate, and bolted the M6M rack using the 4 backward bolts. That was a bad solution, and the plywood broke (see pictures). But then I used the 6 bolts and it is OK. Indeed, I am still using the broken plywood plate with the 6 bolts (since March 2017) without any problem.
I am very happy with this system, and I have ordered an aluminium plate, but I did not find the time to mount it at the moment. It is 5 mm thick, it weights 935 grams, which is much more than the plywood one. Probably 4mm thichness would be enough.
I attach some pictures, but you can find more pictures on this link.



Pages: [1] 2